Table concentrator



Nov. 8, 1927.

A. H. STEBBINS TABLE CONGENTRATOR Filed July 19. 192e 2 Sheets-Sheet 1 /N VENTO/ l BY w.

ATTO RNEY Y Nov. 8, 1927.

A. H. STEBBINS TAB-LE coNdENTRAToR 2 She'etS-Sheet 2 Filed .my 19. 192e;

,4 TTQRNEY Patented Nov. 8; 1927.

,unirse sra-rss .ALBERT H. s'rnBBINs, or Los ANGELES, CALIFORNIA.

TABLE jconcnlvrnamon.

Application filed July. 19, 1926. Serial Non123,332.v

rifhis invention relates toA table concentrators and more particularly to the construction of the concentrator deck and meansfor attaching the deck to ,its supporting carriage. f y Y Y In the `concentrator decks now extensively used for treating materials in a Vdry .condition, the deck surface` is `supported at a transverse inclination-tov cause the Vtailings to flow laterally over the decksurface to`- ward the lower vor tailing discharge side of the deek, and the riies .or channels upon the deckY surface slope upwardly toward the concentrate wall to direct the concentrates away from the lower side of the deck as they travel along the ritHes.

The type of concentrator just ref-erred to wherein the riiiles extend diagonally over the deck surface toward the concentrate wall, works very well in'treating coarse and medium size materials but does not work well in treating fine dust-like materialsy'because the very in'e concentratestend to pile up vand flow laterally over the riftles with the f tailings.

One feature of the present inventionthere- ,tore relates to a novel construction whereby the movement imparted to the deck to advance the materials along the riftles or channels serves also to work the concentrates transversely of the channels away Vfrom the discharge side of the channels.

This is accomplished b y providing the deck surface with rities or channels that extend across the path of `deck movement in a direction to cause the movementto work the concentrates away from the discharge side ofthe channels. This arrangement'of the riiiies howeverdirects the materials travelingalong the riilles toward the lower or tailing side of the deck rather than up theA transversely inclined deck asV heretofore. It

is therefore desirable to change the construction of the kdeck or supporting means vfor r the same so that the materials traveling along the riftles will move up-hill asfthey approach the concentrate discharge .end of the deck.

Another feature of the present invention therefore resides in a deck the discharge end portion of which slopes upwardly with retpcct tothe remaining portion of the deck so that the materials travel 11p-hill as they approach the discharge end of the deck.

Another feature Alof the'invention residesy in the construction l'whereby the deck is pivotally'secured to its supportingcarriageby hinges that are arranged diagonally of the carriage, the arrangement being such that movement of the deck about its hinge con'- nection willvvaryits inclination both longitudinallyxand transversely.'l

Another feature of the invention resides in. shearing blades mounted within the material guide channels and adapted to direct out of the channels some of the materiali.v

traveling therein. Y y Y Still another vfeature of the invention resides in adeck supporting frame that is pivotally mounted for rocking movement about a .transverselyl extending axis vto thereby vary the inclination of the deck inthe direction of its length.

fOtherL features of the-invention and novel combination of parts, in addition tothe above, will 'be hereinafter. described, in con. nection with the accompanying drawings,

whichillustrate good practical forms of the invention.,

In the drawings-e Fig. yl 1s a plan view of a concentrator rarezas deck constructed in accordance with the-` present invcntiom and showing the means for securm'fr the deck toits carria e.

u n C c u Fig. 2 isa side elevation of the deck Vand carriage of Figi mountedupon the sup-V Y porting frame'.

Fig. 3 is a side view ofthe construction i of Fig. l looking towards the upperor concentrate side of the deck l Fig. 4 is a transverse sectional view through'the construction of Fig. 2.

Fig.V 5 is a transverse sectional Vview through a modified type of deck; andA Fig; is a perspective view of a portion of the deck of Fig. 5, showing 'shearing blades associated with the` deck.

` The concentrator deck to be described is mounted upon the deck supporting carriage l() supported for vibratory movement inthe rdirection of its lengthl by the supporting Y frame constructed of the uprights 11 to which the longitudinally extending side rails 12 are secured. The means shown for supporting the carriage 10`upon the frame .for

vibratory movement consists of the bearing blocks 18 that are supported by the frame, and each of which has a groove `in its upper block about an idle grooved sheave`18 that is face adapted to receive a ball or roller 14 the upper portion of which projects into the groove of a similarly shaped bearing block 15 that is fastened to the under face of the carriage 10.

It is desirable to impart a `progressive vibratory movement to the concentrator deck to advance the materials lengthwise of the same. Any well known yor preferred type of operating means may be employed to this end and one good practical construction consists ofthe similar Voperating cables 16 an intermediate portion of each of which is rigidly secured to the carriage 10 lby the clamping blocks 17. One end portion of each cable 1.6 extends from its clamping rotatably Vsupported by a transversely ex tending shaft 19 which-shaft is supported bythe main frame of the concentrator. `The portion of the cable 16 just mentioned extendsdownwardly from the grooved sheave y18 to a coiled spring 20 one end of vwhich rests against a transverselyextending beam 21' of the supporting frame, while the opposite Yend of the vlspring 2O acts against a nut or the like 22, attached to the end ofthe cable 16. `The arrangement is such that the coiled springs 20 will exert a continuous pull Vupon the cables 16 to urge the carriage 10 and deck mounted thereupon in a right-hand direction. K Y Y y y The oppositeend portion of each cable 16 extends from Aa clamping block 17 in a lefthand direction about the grooved idle sheave 23 which is supported by the transversely extending shaft 24 andl this cable extends from the lower portion of the 'sheave 23 Y about a Vsecond grooved sheave 25 which is v frame.

mounted` upon an eccentric 26.V This eccen tric is secured to and is rotated by the power operated shaft 27 that is journaled in bearing brackets 28 vsupported by the main The end portion of the cable 16 which extends from the lower side of the sheave 25 is anchored to the main supporting frame by any suitablemeans such as t-he ajustable bolt 29 having the nuts 30. The

arrangement is such that rotation of the power shaft 27 will rotate the eccentrics 26 within the sheaves 25 to thereby move the sheaves 25 in anV orbital path. This will serve to alternately slack ofi' and tension the portion of the cable which engages each sheave 25 with the result that the deck will be ypulled positively in a left-hand direction, and the cables will then be slacked off to. permit the deck to move in a right-hand direction under the action of the springs 20, and by varying the strength of the springs 2O the progressive4 movement may be made as energetic as desired.

As stated, one of the features ofthe present invention resides in the construction whereby the movement impartedl to the deck struction shown in Figs' and 6.V The travel of the concentrates transversely'of the channels towards the upper-'or concentrate side of the vdeck is effected by' arranging the riffles or channels so that they extend downwardly across the path-of deck movement, as will be apparent from Fig. 1, wherein the direction of the progressive movement imparted to the' deck is indicated by the broken line a--aay 'j f The concentrator-deck is preferably given the general configuration best shownin Fig. 1, wherein it will be noted that the deck is relatively narrow atits material `receiving end having the feed hopper 31, and is also relatively narrow at theopposite or concentrate discharge end 32. "Along, the upper side of the deck is provided a wall 33 which extends from the feed hopper 31 to the cond'5 centrate wall 34 which is provided with the usual buffer blocks 35, andalong the lower side of the deck is provided a wall 3G that extends in',` an inclinedV directfon from the feed hooper 31 to the tailing discharge portion of the deck indicated by 37. The walls 33 and 36, it will be understood, aresuiliciently high to prevent the materials 'being treated from falling ofi the deck. While the configuration of the deck just described is desirable, this particular construction is not essential so long as the rifiles or material guide channels are arranged so vthat they extenddownwardly across the path of deck movement, as above pointed out, to cause the concentrates under .the influence of the deck movement to work away from'the discharge side of the deck. f

The deck construction shown in Figs. 1 to et inclusive is provided with the upstanding riflles 38 which may be of substantially theV same height throughout their entire length, or if desired may taper from. one end of the deck towards the other, as found desirable. The ends of riiiies located near the upper side of the `deck may terminate along the concentrate wall to cause the concentrates to pile up against this wall for retreatment as usual.

It is important to note that the riflles- 38 instead of extending diagonally over the deck surface towards the upper wall thereof, as has been customary heretofore, extend diagonally across the deck surface towards the lower or tailing discharge' side of the deck Ema lli)

37. It will theretore'be seen that thematerials traveling within the channels between theV rilles, insteadrof niovingydiagonally of the deck towards' the upper side thereof as heretofore, `more Adownwardly across the deck towards `the lower 'side thereof, but it lis desirable to cause thematerials'traveling within the channels to travel up-hill as :they advance 'along the deck'surface, in order to slow down somewhat the progress of thermaterials along the deck surface and gives .the Aconcentra-tes an opportunity to Work -downlwardly under the tailings to force the latter outl of the channels. Y

In order to impart this up-hil-l movement to the materia-ls the deck of the present invention has the portion of the ,saine adjacent the concentrate discharge end bent upwardly, las will be apparent from Figs. Q and .3, wherein the upwardly bent end portion `oit the deck is 'clearly shown. A

The desir-able lconstruction just mentioned, whereby the materials traveling" along the deck suritace are causedto more 11p-hill as 'f they approach the discharge end olf the deck,

may be further :secured byv fastening vvthe deck to the deck supporting :carriage l0 by a lrow of hinges .39 arranged so that the axis ofthe hinges extends' diagonally of the carriage' 10, as clearly shown yin l.. As a result oit this arrangement rocking movement of the deck about the hinges will serve to vary the inclination ofthe deck bot-h longitudinally and transversely, 4instead ot tran-sA versely alone, as is the case when thejhinges are arranged along 'the lower side oit the car-- riage l0. 'This will be better understood upon refer-ence to Fig. '3 Vwherein it will be seen that the portion of the deck lying near the concentrate discharge end Vis' elevated a substantial distance fro-ni the supporting carriage 10, .and it will he apparent that this elevation of the deck is due not only to the tact that the end portion of the deck is bent upwardly, as above pointedA out, but largely to vthe arrangeinent oi' the Adiagonally disposed hinges just mentioned. The upper side ofthe deck and the portion thereof near the discharge end 32 may be supportedby a nuinber of adjustable 4i() the upper ends of which are provided with ball/heads 4l mounted in sockets 42 secured Ato the under face of lloor .'43 of the deck surface, and `the lower ends ol' the bolts 4G are adjustably secured to the carriage lOvby the nuts 44.

As av result of the construction so tar described it will be seenthat the materials traveling .along the channels formed between the rililes 8S will tend to work away from the lower wall ot a channel .under the in iiuence ot the progressive deck momen-rent. This tendency .of the materials to Work 'fl-aterally across the channels towards .thenpper side of the deck will be more efiiectiye upon the concentrates vthan upon the tail-ings :and

yas a Jresultthe concentrates in working away :from the lower side of each channel will cro-wd the tailings upwardly and towards the lower side of the channels so that in this manner the tendency ot the concentrates to escape over the lower side ofthechannel with the vtailings is materially reduced. The deck coustructionof the present inventionvwhereby theV concentrates are caused to work'aw-ay :from 'the lower or 'tailing discharge `side of vthe channels is particularly desirable in treating fine, dust-like materials, .sin-ce these tine values tend'to lflow over the sides .oit the rililes with the tailings unless they are forced away from this side of the rillles vin the inanner above pointe-d lout. Y

rlfnstead4 of providing the .deck surface'4'5 with the channel forming rillles 38, thev inaterialreceiving channels may beforined by giving ythe deck the steppedV construction shown in Fig wherein it will be .seen that each channel 46 has a. loor portion 47 and an upstanding portion 48 and it should be noted that each floor porti-on 47 .slopes transversely in a downward direction away from the lower'sideof the deck so that the slope of the floor portion 47 will help to direct the rua- -terialsaway from the discharge side ot' each channel 46. If thelchannels 46 are given the saine'size throughout their length it may be desirable to provide ineans for forcing the tailings- Vout of these channels as the nnterials approach the concentrate `wall :or dis-v charge end loi the deck, `and this may be accomplished by the Iconstruction 'shown in lligg.

wherein it will be :seenthat the vclm'nnels 41S are provided With the shearing blades These blad-es Iare lpreferably pivotally secured within the channels by bolts =or other securing means 50 so that the blades may be adjusted to different angles transversely of the ,channels to YVary the amount of materials direct-ed out of 'the channels by the shearing 'blades -These shearing blades may he arranged in the channelsover the .deck surace .as ftound desirable.v

1 In some constructions it may bedesirable to provide'means whereby the longitudinal inclination lotfthe deck nia-y be varied` and 'to this jend in the construction shown the deck supporti-ng` lrarne is mounted so that the entireA table concentrator, including its supporting rarne,`n1ay be shifted about a transversely extending shaft orfulcru-mbl,

the intermediate portion of which shaft is mounted in a supporting bracket 52, which Ymay be secured to theoor '53 formed ol.

Aconcrete lor other vsuitable material., 'and the end portions of the shaft 5l are journaled bearing brackets 54`securcd to thc side rails 12 of' kthe inain frame. The arrangement is such that the deck rsupporting traine lmay be rocked about the shalt to dillerent inclinations in the direction of its length, and after it has been tilted to a desired position it may be secured in this position by Vplacing blocks 55 under the frame and. by

clamping the frame to the` floor by the bolts 56. What is'claime'd is l G f 1 l. AV table concentrator, comprising in combinationf a deck supporting frame, a

` deck mounted upon the frame ata transverse inclination and having a concentrate wall extending along the upper side of the deck,

of`each channel in the direction of the concentratewall and away from the tailing discharge sideof the channels, and means for supporting they deck so that ther materials traveling along the channels are required to Y ltravel uphill as they approach the discharge Y of its length, a series of material receiving channels extenrdlng over the deck surface toV 40 end of the deck to thereby promotethe tendency of the concentrates to crowd the tail'- ings out of the channels.

2 A table concentrator, comprising in combination a deck supporting frame, a deck mounted upon the frame at a transverse inclination and having a concentrate wall'extending along 'the upper s ide of the deck and against which the concentrates are directed for retreatment, means for yimparting vibratory movement to the deck in the direction terminate along the concentrate wall and arranged so that they extend longitudinally downwardly ,across the path of deck movement toward the lower side of ythe deck to cause the concentrates to work transversely of the channels in the direction4 of the concentrate wall and away. from the discharge -side of the channels. and said deck having its discharge end portion inclined upwardly to cause the materials traveling alongthechannels to travel up-hill as they approach they discharge end of the deck to thereby promote the tendency of the concentrates to crowd the tailings out of the channels.

3. A table concentrator comprising in combination, a deck supporting frame, a deck carriage supported by theframe for vibra-toryA movement, ,a deck mounted upon the carriage and having a concentrate wall extending along the upper side of the deck but diagonally of the supporting frame and also of ythe path of deck movement, a deck surface provided with guide channels for guiding the materials over the deck surface toward the concentrate wall, and means for adjustably connecting the deck to the carand transversely.

riagefcomprising a row of'hinges disposed diagonallyof the deck supporing frame, and in substantially parallel relation to the concentrate wall 'but at the opposite, side of the deck so that theentire deck may ybe'rocked about the row of hinges to vary the'inclination ofthe deck both transversely. g f Y Y. l 4f. A table concentratorV comprising in combination, -a 'deck supporting frame, a deck carriage supported by the frame for vibratory movement in the direction of its length, a deck mounted vupon the carrige and having a concentrate wall extending .along thefupper side of 'the deck diagonally of the supporting frame :and also of thepath of longitudinally and deckmovement,r Va .Y deck surface provided Y with-guidefchannelsfor guiding the materials over the deck/surface Vtoward the concentrate Wall and which are arranged. to extend across the path-of deck movement in a direction to vcause the concentrates to work transversely of each channeltoward the concentrate wall, andmeans for adjustably connecting the deck to the carriage, comprising a row 4of hinges disposed-approximately parallel to the concentrate walljbutatthe opposite side of the deck and diagonally of the supportingframe soV that the entire deck may Vbe rocked about vthe row of hinges tovary the inclination of the deck both longitudinally concentra-tor deck, comprising in combination, a deck surface provided with a series of material guide channels, means for actuating the deck to advance the materials Valong the channels, shearing blades arranged to extend Vpar-t way across the channels to deflect therefromsome ofthe materials trav- 'eling within the channels, and means for supporting the shearing blades for adjustment to different positions within the channe s. l

6. A concentrator deck, comprising vin combination, a deck surface having a stepped construction'formed to provide a series of material guide channels each having an upstandingwall portion and a floor portion that slopesdownwardly toward the wall portion, means foractuating the deck to advance -the materials along the channels, shearing blades arranged tofextend part way across the channels to deflect therefrom some of the materials traveling rwithin the channels, and means for supporting the shearing blades for adjustment to different positions within the channels.

7. A concentrator deck, comprising in combination, a deck surface having a stepped shearing blades mounted in said channels and adjustable toward and from said upstandinvg wall portion to deiect from the channels some of the materials traveling within the channels, and means for supporting the shearingv blades in different positions of adjustment.

8. A concentrator deck, lcomprising in combination, a deck surface having a stepped construction formed to provide a series of material guide channels each having an up-l standing wall portion and a loor portion that slopes downwardly toward the wall portion, means for actuating the deck to advance the materials along the channels, and a shearing blade mounted in a channel in spaced relation to a wall portion thereof to provide a restricted passage between the shearing blade and said wall through which the concentrates may pass 'while the tailings are deflected out of the channel by the shearing blade.

' 9. A concentrator deck, comprising` in combination, a deck surface that is v supported at a transverse inclination and which is provided with a series of material receiving channels, means for actuating the deck to advance the materials along the channels and to promote flow of the tailings down the iny clined deck surface from one channel to the next, and a. shearing blade mounted in a channel to deflect the tailings therefrom and arranged to extend from the discharge side of the channel toward the opposite wall ALBERT H. sTEBBINsy.

whereof, I have signed my 

